混沌光通信中多电平调制的比较研究

2006 IFIP International Conference on Wireless and Optical Communications Networks Pub Date : 2006-08-07 DOI:10.1109/WOCN.2006.1666668

R.R.C. Reddy, T. Srinivas, A. Nadarajan

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引用次数: 4

摘要

用数值方法证明了频谱高效的多电平调制方案在混沌光通信系统中的性能。在本文中，我们报告了QDPASK(正交差相移幅键控)和IHAP(独立混合振幅/相位调制)形式的多电平调制方案的使用。归零(RZ)脉冲型QDPASK信号被添加到混沌波形并成功检索。对混沌进行了IHAP调制，并与RZ-QDPASK进行了比较，显示了数据的成功恢复。两种方案编码后的信息都能成功恢复，比特率比仅采用幅度编码的普通混沌光通信系统提高了3倍

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Comparative study between multi level modulations in chaotic optical communications

Performances of spectrally efficient multi level modulation schemes in chaotic optical communication systems are demonstrated numerically. In this paper we report usage of multi level modulation schemes in the form of QDPASK (quadrature differential phase amplitude shift keying) and IHAP (independent hybrid amplitude/phase modulation). Return to zero (RZ) pulse profiled QDPASK signal is added to the chaotic waveform and successfully retrieved. IHAP modulation of chaos is carried out and successful recovery of data is shown along with comparison with RZ-QDPASK. Successful recovery of message encoded in both schemes is shown heralding in improvement of bit rate 3 times than the ordinary chaotic optical communication system with only amplitude encoding

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2006 IFIP International Conference on Wireless and Optical Communications Networks

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